Digital Commons Network^™

Costs And Benefits Of Gregarious Feeding In The Meadow Spittlebug, Philaenus Spumarius, Warren Abrahamson, M.J. Wise, D.L. Kieffer

Warren G. Abrahamson, II

No abstract provided.

Post-Fire Canopy Recovery In Two Fire-Adapted Palms, Serenoa Repens And Sabal Etonia (Arecaceae), Warren Abrahamson, C.R. Abrahamson

Warren G. Abrahamson, II

No abstract provided.

Ecology Of Marine Fishes : California And Adjacent Waters, Larry Allen, Daniel Pondella, Michael Horn

Daniel Pondella

Fundamental ideas in marine ecology have emerged from the study of marine fishes. This unique, authoritative, and accessible reference, compiled by 35 luminary ecologists, evolutionary biologists, and ichthyologists, provides the first-ever synthesis and interpretation of the large, often daunting, body of information on the ecology of marine fishes. Comprehensive and generously illustrated, this volume focuses on the fauna of the eastern pacific, paying particular attention to the California coast, which is among the most diverse and best studied of all marine ecosystems.

Tailor-Made Composite Functions As Tools In Model Choice: The Case Of Sigmoidal Vs Bi-Linear Growth Profiles, Winfried Peters, Tobias Baskin

Winfried S. Peters

Scrub Hickory: A Florida Endemic, Warren Abrahamson, J.N. Layne

Warren G. Abrahamson, II

No abstract provided.

The Effect Of Environmental Parameters And Cyanobacterial Blooms On Phytoplankton Dynamics Of A Portuguese Temperate Lake, Daniela De Figueiredo, Ana Reboleira, S. Antunes, N. Abrantes, U. Azeiteiro, F. Gonçalves, M. Pereira

Ana Sofia P.S. Reboleira

The increasing occurrence of cyanobacterial blooms in freshwaters is of great concern due to the ability of many cyanobacteria to produce cyanotoxins. In the present work, the eutrophied Vela Lake (Central Portugal), used for recreational purposes and as a water source for agriculture, was monitored every fortnight between 2000 and 2001. Phytoplankton diversity and densities were measured and correlated to environmental parameters. A seasonal phytoplanktonic succession was observed and it was mainly correlated with conductivity, temperature, total suspended solids and nutrients availability (particularly phosphorus). Diatoms were dominant during winter months (inferior temperatures and higher nutrients availability) followed by green algae …

African-American Mitochondrial Dnas Often Match Mtdnas Found In Multiple African Ethnic Groups [Published Correction Appears In Bmc Biol 2006; 5:13], Bert Ely, Jamie L. Wilson, Fatimah Linda Collier Jackson, Bruce A. Jackson

Fatimah Linda Collier Jackson

Rack1 Mediates Multiple Hormone Responsiveness And Developmental Processes In Arabidopsis, Hemayet Ullah

Hemayet Ullah

Identification And Characterization Of A New Class Of Bilin Lyase Responsible For Attachment Of Phycocyanobilin To Cys-153 On The Β-Subunit Of Phycocyanin In Synechococcus Sp. Pcc 7002, Wendy M. Schluchter

Wendy M Schluchter

No abstract provided.

Molecular Detection Of Marine Invertebrate Larvae, Shana Goffredi, William J. Jones, Christopher A. Scholin, Roman Marin Iii, Robert C. Vrijenhoek

Shana Goffredi

The ecological patterns of many invertebrate larvae remain an ongoing mystery, in large part owing to the difficult task of detecting them in the water column. The development of nucleic-acid-based technology has the potential to resolve this issue by direct identification and monitoring of embryonic and larval forms in situ. We report herein on the successful development and application of nucleic-acid-based sandwich hybridization assays that detect barnacles using rRNA-targeted probes with both group-(order Thoracica) and species-(Balanus glandula) specificity. Primary results include the determination of target 18S rRNA sequences and the construction of "capture" probes for detection of larvae using hybridization …

Silken Toolkits: Biomechanics Of Silk Fibers Spun By The Orb Web Spider Argiope Argentata (Fabricius 1775), Todd A. Blackledge, Cheryl Y. Hayashi

Todd A. Blackledge

Orb-weaving spiders spin five fibrous silks from differentiated glands that contain unique sets of proteins. Despite diverse ecological functions, the mechanical properties of most of these silks are not well characterized. Here, we quantify the mechanical performance of this toolkit of silks for the silver garden spider Argiope argentata. Four silks exhibit viscoelastic behaviour typical of polymers, but differ statistically from each other by up to 250% in performance, giving each silk a distinctive suite of material properties. Major ampullate silk is 50% stronger than other fibers, but also less extensible. Aciniform silk is almost twice as tough as other …

Ethnic Identity And Type 2 Diabetes Health Attitudes In Americans Of African Ancestry, Jelena Brezo, Charmaine D. Royal, Franklin Ampy, Verle Headings

Franklin Ampy

Multiple Sequence Alignment Accuracy And Phylogenetic Inference, T. Heath Ogden, Michael S. Rosenberg

T. Heath Ogden

Phylogenies are often thought to be more dependent upon the specifics of the sequence alignment rather than on the method of reconstruction. Simulation of sequences containing insertion and deletion events was performed in order to determine the role that alignment accuracy plays during phylogenetic inference. Data sets were simulated for pectinate, balanced, and random tree shapes under different conditions (ultrametric equal branch length, ultrametric random branch length, nonultrametric random branch length). Comparisons between hypothesized alignments and true alignments enabled determination of two measures of alignment accuracy, that of the total data set and that of individual branches. In general, our …

Laboratory Bioefficacy Of Creek 1.0g (Tentephos) Against Aedes (Stegomyia) Aegypti (Linnaeus) Lairvae, Chen Chee Dhang

Chen Chee Dhang

The bioefficacy of a commercial formulation of temephos, Creek((R)) againstAedes aegypti larvae was studied in the laboratory. Earthen jars were filled with 10 L tap water each. One g of temephos (Creek((R))) sand granule formulation was added into each earthen jar as recommended by the manufacturer. The final test concentration of Creek((R)) was 1 mg ai./L One earthen jar was filled with 10 L tap water and served as a test control (untreated). Thirty late 3(rd) or early 4(th) instar of lab-bred Ae. aegypti larvae were added into each earthen jar. Mortality of the larvae was recorded after 24 hours …

Female Preferences For Male Calling Songs In The Bladder Grasshopper Bullacris Membracioides, Vanessa C. K. Couldridge, Moira J. Van Staaden

Moira J. van Staaden

Male acoustic signals and the information they convey are often critical determinants of female mate choice. Bladder grasshoppers are one of numerous orthopteran taxa utilizing sound as the basis of courtship and ultimately mating. However, despite the extreme specializations for long-distance acoustic communication in this family, female mating preferences for male calls have not been previously investigated. Here we examine female acoustic responses to playbacks of male calls in Bullacris membracioides. Females were tested in three separate contexts, viz. response to conspecific calls of different individuals, response to degraded conspecific calls, and response to the calls of two heterospecifics. Female …

The Use Of The Major Chelae By Reproductive Male Crayfish (Orconectes Rusticus) For Discrimination Of Female Odours, Rachelle M. Belanger, Paul A. Moore

Paul A. Moore

The major chelae have been found to be important structures used for breeding and reproduction in crustaceans; however their role in the detection of conspecific sex odours is unknown. We implemented a behavioural bioassay to test whether male reproductive (form I) and nonreproductive (form II) crayfish (Orconectes rusticus) use their major chelae to detect reproductive female odours. We videotaped and analysed the behavioural reactions of form I and form II males to four different odour treatments: reproductive female-conditioned water, male-conditioned water, filtered fish homogenate (food odour; positive control), and water (negative control) delivered from an air stone (N = 20 …

Evaluation Of Eelgrass Mitigation And Fishery Enhancement Structures In San Diego Bay, California, Daniel Pondella Ii

Daniel Pondella

To offset habitat loss and increase fishery production, an eelgrass mitigation habitat was completed in San Diego Bay, California in 1997. This mitigation effort consisted of the transplantation of eelgrass, Zostera marina L., in the western portion of the bay. In addition to the establishment of a new eelgrass bed, four enhancement reefs made of either quarry rock or concrete rubble were created to further enhance fishery stocks and the area's ecosystem. Two design criteria and a direct comparison between quarry rock and concrete reefs were examined in this 5-yr pilot program. The newly created eelgrass habitat quickly performed at …

Conservation Medicine On The Galápagos Islands: Partnerships Among Behavioral, Population, And Veterinary Scientists, Patricia G. Parker, Noah Kerness Whiteman, R. Eric Miller

Patricia Parker

No abstract provided.

Absence Of Spiroplasma Or Other Bacterial 16s Rrna Genes In Brain Tissue Of Hamsters With Scrapie, Irina Alexeeva, Ellen J. Elliott, Sandra Rollins, Gail E. Gasparich, Jozef Lazar, Robert G. Rohwer

Gail Gasparich

Multiple Sequence Alignment Accuracy And Phylogenetic Inference, T. Heath Ogden

T. Heath Ogden

Phylogenies are often thought to be more dependent upon the specifics of the sequence alignment rather than on the method of reconstruction. Simulation of sequences containing insertion and deletion events was performed in order to determine the role that alignment accuracy plays during phylogenetic inference. Data sets were simulated for pectinate, balanced, and random tree shapes under different conditions (ultrametric equal branch length, ultrametric random branch length, nonultrametric random branch length). Comparisons between hypothesized alignments and true alignments enabled determination of two measures of alignment accuracy, that of the total data set and that of individual branches. In general, our …

Manduca Sexta Cation-Chloride Cotransporter Gene, Partial Cds, Christopher M. Gillen

Christopher M. Gillen